Spatial distribution of unmonitored inland water discharges to the sea

Jarsjö, Jerker; Shibuo, Yoshihiro

doi:10.1016/j.jhydrol.2007.09.052

Cited by 46 publications

(75 citation statements)

References 35 publications

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“…This is a clear advantage in estimating water fluxes. For instance evapotranspiration, which is an essential link between land and atmospheric hydro-climatic conditions, is hard to measure over large areas and difficult to model without the bounds provided by the water budget closure over a hydrological drainage basin (Shibuo et al 2007;Jarsjö et al 2008). Therefore, investigating climate and water parameter dynamics on the basin scale may facilitate better understanding of complex water processes than climate model grids, which are commonly unrelated to hydrological basins.…”

Section: Introductionmentioning

confidence: 99%

Relevance of Hydro-Climatic Change Projection and Monitoring for Assessment of Water Cycle Changes in the Arctic

Bring

Destouni

2010

AMBIO

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Rapid changes to the Arctic hydrological cycle challenge both our process understanding and our ability to find appropriate adaptation strategies. We have investigated the relevance and accuracy development of climate change projections for assessment of water cycle changes in major Arctic drainage basins. Results show relatively good agreement of climate model projections with observed temperature changes, but high model inaccuracy relative to available observation data for precipitation changes. Direct observations further show systematically larger (smaller) runoff than precipitation increases (decreases). This result is partly attributable to uncertainties and systematic bias in precipitation observations, but still indicates that some of the observed increase in Arctic river runoff is due to water storage changes, for example melting permafrost and/or groundwater storage changes, within the drainage basins. Such causes of runoff change affect sea level, in addition to ocean salinity, and inland water resources, ecosystems, and infrastructure. Process-based hydrological modeling and observations, which can resolve changes in evapotranspiration, and groundwater and permafrost storage at and below river basin scales, are needed in order to accurately interpret and translate climate-driven precipitation changes to changes in freshwater cycling and runoff. In contrast to this need, our results show that the density of Arctic runoff monitoring has become increasingly biased and less relevant by decreasing most and being lowest in river basins with the largest expected climatic changes.

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Section: Introductionmentioning

confidence: 99%

Relevance of Hydro-Climatic Change Projection and Monitoring for Assessment of Water Cycle Changes in the Arctic

Bring

Destouni

2010

AMBIO

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“…Due to inherent complexities of coupled subsurface-surface water systems (Jarsjö et al 2008;Destouni et al 2010;Persson et al 2011), effective remediation measures need to be underpinned by a relatively detailed understanding of nutrient transport processes, and not least Fig. 4 Anthropogenic P-load contributions from catchments of the NBS-RBD to their outlets (x-axis) and to the Baltic Sea (y-axis).…”

Section: Discussionmentioning

confidence: 99%

Saving the Baltic Sea, the Inland Waters of Its Drainage Basin, or Both? Spatial Perspectives on Reducing P-Loads in Eastern Sweden

Andersson

Jarsjö

Petersson

2014

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Nutrient loads from inland sources to the Baltic Sea and adjacent inland waters need to be reduced in order to prevent eutrophication and meet requirements of the European Water Framework Directive (WFD) and the Baltic Sea Action Plan (BSAP). We here investigate the spatial implications of using different possible criteria for reducing water-borne phosphorous (P) loads in the Northern Baltic Sea River Basin District (NBS-RBD) in Sweden. Results show that most catchments that have a high degree of internal eutrophication do not express high export of P from their outlets. Furthermore, due to lake retention, lake catchments with high P-loads per agricultural area (which is potentially of concern for the WFD) did not considerably contribute to the P-loading of the Baltic Sea. Spatially uniform water quality goals may, therefore, not be effective in NBS-RBD, emphasizing more generally the need for regional adaptation of WFD and BSAP-related goals.

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“…In the second part of this study, we link the LaSAR contaminant transport methodology described above to GIS-based hydrologic modelling [6,7] in order to model contaminant transport through the coupled groundwater-surface water system of a specific coastal catchment area. The area is one of the candidate sites for the final repository of nuclear waste in Sweden: the flat coastal area of Forsmark (Fig.…”

Section: Application To Coastal Catchment Area Forsmarkmentioning

confidence: 99%

“…2), 100km north of Stockholm. As input for transport pathway, velocity and travel time calculations, we use raster maps of precipitation, calibrated evapotranspiration, runoff, vegetation, soil texture, slope, and flow directions, which were produced by Jarsjö et al [6,7]. The model area covers 29km 2 and the grid cell resolution is 10 × 10m.…”

Section: Application To Coastal Catchment Area Forsmarkmentioning

confidence: 99%

“…We define the solute travel time through a lake or wetland as T Res =Ad eff /Q, where A is the area of the lake or wetland, d eff is the mean effective depth, and Q is the modelled [6,7] mean annual discharge to the lake/wetland. The mean effective depth in a wetland is defined as the product of the depth and the water content.…”

Section: Application To Coastal Catchment Area Forsmarkmentioning

confidence: 99%

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Propagation of environmental risk from contaminant transport through groundwater and stream networks

et al. 2008

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We use a Lagrangian stochastic advective-reactive (LaSAR) approach to model coupled groundwater and surface water contaminant transport. In this approach, physical (advective) solute travel time distributions constitute main functions for the contaminant transport representation. In a specific catchment area case study, we show how these travel time distributions, for separate groundwater and stream network systems and for the linked groundwater-stream systems of whole catchments, can be modelled and quantified from available field data. We further use the LaSAR modelling approach in an extreme-scenario methodology for investigating how the risk (probability) of concentrations exceeding given environmental or health-based concentration limits may propagate downstream of a contaminant source for various spatial source extents and contaminant release magnitudes and dynamics under different aquifer conditions. Results show that the average relation between characteristic advective transport and natural attenuation time scales is essential and in some (with results identifying also in which) cases sufficient information for assessing if and where this risk may decline below acceptable levels downstream of the source zone. The presented general quantification methodology and specific exemplification results may provide useful guidelines for emergency remediation of contaminated land sites and for prioritisation decisions and scoping calculations to focus further investigations of long-term remediation options on critical site and contaminant parameters.

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Spatial distribution of unmonitored inland water discharges to the sea

Cited by 46 publications

References 35 publications

Relevance of Hydro-Climatic Change Projection and Monitoring for Assessment of Water Cycle Changes in the Arctic

Relevance of Hydro-Climatic Change Projection and Monitoring for Assessment of Water Cycle Changes in the Arctic

Saving the Baltic Sea, the Inland Waters of Its Drainage Basin, or Both? Spatial Perspectives on Reducing P-Loads in Eastern Sweden

Propagation of environmental risk from contaminant transport through groundwater and stream networks

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